57 scientist data jobs at 29 companies in O'Fallon, IL

2mo
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Data Scientist
Falls Church or Fort Meade or Stuttgart or Tampa or Honolulu or Colorado Springs or Doral or Omaha or Scott Air Force Base
OnsiteFull Time
Agile Defense
Agile Defense: Provides IT modernization and cybersecurity for federal government agencies.
4+ YOE4+ years in data science or ML, proficient in Python/SQL, experience with Spark/Databricks, cloud data platforms; onsite DoD role.
Python, SQL, Spark, Databricks, PySpark, Tableau, Matplotlib, Plotly, MLflow, TensorFlow, scikit-learn, XGBoost
1w
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Data Scientist
Scott AFB, Illinois, United States
$109k-$142k/yr OnsiteFull Time
Department of the Army
Department of the Army: A federal military department responsible for land-based defense operations and related administrative services.
1+ YOEBachelor's in mathematics, statistics, computer science, data science or related; GS-13 requires one year specialized experience applying advanced data analysis, modeling, algorithm development, and communicating technical results.
2w
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Data Scientist
St. Louis, Missouri, United States
$88k-$123k/yr OnsiteFull Time
Nestlé
NestléSIX Swiss Exchange: NESN: Produces and sells a wide range of food and beverages.
3+ YOEBachelor's degree and 3+ years in data science; experience with Python, SQL, ML/optimization models, cloud platforms and MLOps practices.
Python, SQL, scikit-learn, pandas, PySpark, NumPy, Azure, AWS, GCP, MLflow, Azure ML, SageMaker, Kubeflow, Databricks, Snowflake, LangChain, Semantic Kernel, vector databases
2w
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Senior Data Scientist
St. Louis, Missouri, United States
OnsiteFull Time
GRVTY
GRVTY: Develops defense technology, cyber, and intelligence software solutions.
Active TS/SCI clearance, senior-level Python and data science experience supporting intelligence missions, scalable data pipeline and visualization skills, ability to operate independently and lead technical initiatives.
Python, JEMA, Brewlytics, ArcGIS ModelBuilder
3w
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Data Scientist - Mid
Denver or St. Louis or Sterling or Springfield
$69k-$142k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
4+ YOEBachelor's or equivalent,4+ years data science experience,proficiency in Python or R and SQL,statistics and visualization experience,TS/SCI clearance with polygraph willingness.
Python, R, SQL, matplotlib, Tableau, ArcGIS, QGIS, GeoPandas
1mo
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Data Scientist
St. Louis or Brentwood or Richmond Heights or Clayton or Maplewood
HybridFull Time
Enterprise Mobility
Enterprise Mobility: Provider of vehicle rental and diverse mobility solutions.
2+ YOEMaster's in a statistical/mathematical field, 2+ years experience with predictive models/statistical inference/deep learning, proficiency in R or Python, experience with TensorFlow or PyTorch, authorized to work in the U.S., must reside in St. Louis area, presentation and security awareness skills.
TensorFlow, PyTorch, R, Python, Linux/Unix, SQL
2w
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Data Scientist 728
St. Louis, Missouri, United States
OnsiteFull Time
Freedom Technology Solutions Group
Freedom Technology Solutions Group: Provides geospatial and software engineering solutions for national security agencies.
1+ YOEActive TS/SCI clearance, experience building statistical and ML models, geospatial and imagery data experience preferred, proficiency with Python and analytical toolchains, strong communication and requirements gathering skills.
Python, Pandas, NumPy, SciPy, Jupyter, SQL, PostgreSQL, PostGIS, Aurora, Oracle, Redis, Elasticache, AWS (S3, Athena, Glue, Lambda, ECS), Docker, GitLab CI/CD, Linux, GDAL, Rasterio, OGR, GeoPandas, ArcGIS, QGIS, Plotly, Matplotlib, Tableau, Microsoft Power BI
1mo
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Senior Data Scientist
St. Louis, Missouri, United States
OnsiteFull Time
Tiger Analytics
Tiger Analytics: Provides AI and advanced analytics consulting for global enterprises.
8+ YOE8 years data science/ML experience; hands-on Python and SQL; experience with A/B testing, causal ML/matching models/AutoML; strong statistical knowledge, problem-solving, and stakeholder communication.
Python, SQL, AutoML
4d
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Experienced Data Scientist
Hazelwood, Missouri, United States
$128k-$174k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
5+ YOEBachelor's degree in STEM, 5+ years data science/ML experience, programming in Python/Julia/R/C/C++/C#/Java, experience leading technical projects, active U.S. Secret clearance required.
Python, Julia, R, C, C++, C#, Java, PyTorch, TensorFlow, ClearML, MLFlow, SQL, NoSQL, Azure, AWS
6d
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Senior Data Scientist
Saint Louis, Missouri, United States
$117k-$151k/yr HybridFull Time
Safety National
Safety National: Provides specialty insurance and reinsurance for workers' compensation.
6+ YOEMaster's in a quantitative field, 6+ years data science experience, proficiency with Python or R, ML libraries, advanced SQL, Microsoft SQL Server and Snowflake experience, strong communication; U.S. work authorization required.
Python, R, Scikit-Learn, XGBoost, TensorFlow, PyTorch, Microsoft SQL Server, Snowflake, SQL
1mo
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Data Scientist I
St. Louis, Missouri, United States
$70k-$110k/yr OnsiteFull Time
Esri
Esri: Developing software for digital mapping and spatial data analysis.
1+ YOE1+ years professional experience with practical machine learning, generative AI/LLMs, applied statistics, Python, data visualization, strong communication, US citizenship and ability to maintain a US security clearance, Bachelor's in a STEM field.
Python, Esri software, GIS, IoT, large language models
4d
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Senior Data Scientist
Hazelwood, Missouri, United States
$162k-$220k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
9+ YOEBachelor's in relevant field,9 years data science experience,active U.S. Secret security clearance,programming in Python/Julia/R/C/C++/C#/Java,team leadership,EMR not mentioned,technical assessment required.
Python, Julia, R, C, C++, C#, Java, SQL, NoSQL, PyTorch, TensorFlow, ClearML, MLFlow, Azure, AWS, LLMs
4d
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Lead Data Scientist, AdTech
Chicago or Columbus or Detroit or Kansas City or Madison or Saint Louis
$175k-$200k/yr RemoteFull Time
Launch Potato
Launch Potato: Digital media operating a portfolio of consumer brands.
5+ YOE5+ years applied data science experience building and deploying ML in AWS, strong modeling fundamentals, adtech or performance marketing experience, expert Python and SQL, ROAS-focused modeling.
Python, SQL, AWS, Looker, Google, Meta
1w
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Sr. Data Scientist
Hazelwood, Missouri, United States
$115k-$160k/yr OnsiteFull Time
bioMérieux
bioMérieuxEuronext Paris: BIM: Provides diagnostic solutions for infectious diseases and industrial microbiology.
5+ YOE5+ years experience in machine learning, statistics, image/signal analysis, and programming (Python or R).Bachelor's required; MS/PhD preferred.Experience in regulated (ISO/FDA) environments preferred.
Python, R, Microsoft Outlook, Microsoft Teams, Microsoft Word, Microsoft Excel
2w
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Data Scientist, Senior
St. Louis, Missouri, United States
$120k-$150k/yr OnsiteFull Time
Chopine Analytic Solutions
Chopine Analytic Solutions: Provides intelligence analysis and operational support to defense agencies.
TS/SCI clearance required (CI/Poly obtainable), intelligence analysis experience, senior-level Python scripting, designing scalable processes for large datasets, creating visualizations, and managing multiple projects.
Python, JEMA, Brewlytics, ArcModel Builder
1w
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Sr. Data Scientist
Hazelwood, Missouri, United States
$115k-$160k/yr OnsiteFull Time
bioMérieux
bioMérieuxEuronext Paris: BIM: Develops and manufactures in vitro diagnostic solutions for laboratories.
5+ YOE5+ years experience in machine learning, statistics, image/signal analysis and Python or R; bachelor\u0002s required; EM algorithm design, experiment design, and problem-solving skills.
Python, R, Microsoft Outlook, Microsoft Teams, Microsoft Word, Microsoft Excel
1mo
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Sr. Exploitation Specialist/Data Scientist (TS/SCI)
St. Louis, Missouri, United States
OnsiteFull Time
Culmen International
Culmen International: Provides specialized mission support and security services to governments.
10+ YOETS/SCI clearance required (CI/Poly eligible), 10+ years relevant experience, strong Python and data science skills, hands-on Esri ArcGIS Pro/Online experience, AI/ML, data visualization, database and analytic automation expertise.
Esri ArcGIS Pro, ArcGIS Online, Safehouse, ICGIS, Python, Pandas, NumPy, SciPy, Matplotlib, Plotly, Dash, Bokeh, HTML5, JavaScript, ArcObjects, Model Builder, Oracle, SQL, ArcGIS Desktop, ArcGIS Server, Arc SDE, ArcIMS, Microsoft .NET, C++, Java
2w
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GEOINT Data Scientist (TS/SCI)
St Louis, Missouri, United States
OnsiteFull Time
Xcellent Technology Solutions
Xcellent Technology Solutions: Provides geospatial intelligence and IT services to federal agencies.
Active TS/SCI clearance with CI poly ability; advanced degree or equivalent experience (Master's+5/BS+7/AS+8/10+ years); strong Python and SQL; ArcGIS familiarity; workflow automation and defensible analytic model experience.
Python, SQL, ArcGIS
2w
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Senior Exploitation Specialist / Data Scientist
Springfield or Saint Louis
OnsiteFull Time
B&A
B&A: Provides IT systems integration and data services to federal agencies.
10+ YOEActive TS clearance, 10+ years relevant experience, bachelor\u0002s degree, intelligence/data science background, senior-level Python scripting, scalable data process design, and visualization skills.
Python, JEMA, Brewlytics, ArcGIS Model Builder
6d
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Senior Geospatial Data Scientist, VP
Charlotte or Jacksonville or O'Fallon
$117k-$176k/yr HybridFull Time
Citi
CitiNYSE: C: Providing global banking, investment, and wealth management services.
5+ YOE5+ years data/business analysis experience, statistical modeling, desktop GIS (ESRI, MapInfo) experience, strong communication, leadership, and risk-awareness; undergraduate degree in quantitative field (graduate preferred).
ESRI, MapInfo